Automotive Image Sensor Concurrent Authentication and Data Transmission
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Solution Overview
Problem
Current automotive image sensors require significant time for device authentication, leading to delays in transmitting secured images and user discomfort during the booting process, especially in advanced driver assistance systems where rapid data processing is crucial.
Innovation Solution
An automotive image sensor system that performs device authentication concurrently with image data transmission, utilizing a security circuit to generate tags for image data and an electronic control unit to verify integrity, allowing for simultaneous initialization and image output, thereby reducing booting time and improving user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If device authentication is performed before image data transmission, then security is improved, but booting time increases
Solution Approach 1:
The patent performs device authentication in advance during the initialization phase before image data transmission begins. The authentication process completes security verification beforehand, allowing image data to be transmitted immediately without waiting for authentication, thus improving security while minimizing impact on booting time.
Solution Approach 2:
The patent maintains continuous operation by overlapping the authentication process with the initialization sequence. While authentication is being performed, other initialization tasks continue concurrently, ensuring that the useful action of system startup continues without interruption, thereby reducing the perceived booting time.
2Reliability
If device authentication is performed before image data transmission, then image data integrity is improved, but user convenience deteriorates
Solution Approach 1:
The authentication process is completed in advance during system initialization, so that by the time the user interacts with the system, authentication is already finished. This ensures image data integrity through proper authentication while maintaining user convenience by eliminating visible delays or interruptions during user operations.
3Reliability
If sequential processing is used for authentication and image transmission, then security is improved, but productivity decreases
Solution Approach 1:
Authentication is performed as a preliminary action during the initialization phase, completing security verification before the main image data transmission workflow begins. This sequential arrangement ensures security requirements are met while allowing the high-speed image data processing to proceed without waiting for authentication, thus maintaining both security and productivity.
Data Source
AI summary
Provided is a method of operating an automotive image sensor, the method including performing a reset operation to set an initialization register corresponding to operation information of the automotive image sensor, receiving a device authentication request from an electronic control unit after performing the reset operation, performing an authentication operation with the electronic control unit based on the device authentication request, obtaining first image data while performing the authentication operation, transmitting the first image data to the electronic control unit while performing the authentication operation, obtaining second image data after the authentication operation is completed, generating a tag for the second image data, and transmitting the second image data and the tag to the electronic control unit.